#!/bin/sh
set -eu

if [ "$#" -ne 1 ] || ! printf '%s\n' "$1" | grep -Eq '^[0-9a-f]{40}$'; then
  echo "usage: $0 <full-lowercase-git-sha>" >&2
  exit 2
fi

script_dir=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
repository_dir=$(dirname -- "${script_dir}")
kustomization="${repository_dir}/apps/immich-sync/kustomization.yaml"
temporary="${kustomization}.tmp"

awk -v tag="$1" '
  /^  newTag: / {
    if (updated) {
      print "multiple newTag fields found" > "/dev/stderr"
      exit 1
    }
    print "  newTag: " tag
    updated = 1
    next
  }
  { print }
  END {
    if (!updated) {
      print "newTag field not found" > "/dev/stderr"
      exit 1
    }
  }
' "${kustomization}" > "${temporary}"
mv "${temporary}" "${kustomization}"